Robert Lang McDonald QSM (21 April 1933 – 22 February 2006) was a New Zealand lawn bowls player who competed at four Commonwealth Games, winning gold, silver and bronze medals in the men's pairs.

[1] At the 1962 British Empire and Commonwealth Games in Perth, Western Australia, he won the men's pairs gold medal partnering Robbie Robson.

Eight years later he won the silver medal again with Robson in the pairs at the 1970 Commonwealth Games.

In 1974 he claimed his last Commonwealth Games medal with a bronze in the men's pairs.

[6] In 2013, McDonald was an inaugural inductee into the Bowls New Zealand Hall of Fame.